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Operating Instructions
Precipitation Sensors (15188++)

(15188++) Precipitation Sensors

Operating Instructions

Features

Weighing precipitation sensor for automatic weather stations

Linearised pulse output, e. g. for connection to external data
loggers

Selectable analog output signals, e g. for easy connection to
PLC

Selectable measuring ranges as well as absolute or gliding
sum for the analogue output signals

Exchangeable, weighing tipping bucket system according to
Joss-Tognini, overflow proof

2 cm³ tipping bucket (2g water) for precise precipitation mea-
suring in regions with normal rain falls

4 cm³ tipping bucket (4g water) for precise precipitation mea-
suring in regions with heavy rain falls / tropical rain

Winter fit variety with controlled 2-circuit heating

High life expectance by use of weatherproof materials (an-
odized aluminium, stainless steel)

Funnel according to the WMO Standard No. 8

Summary of Contents for 15188++

Page 1: ... as absolute or gliding sum for the analogue output signals Exchangeable weighing tipping bucket system according to Joss Tognini overflow proof 2 cm tipping bucket 2g water for precise precipitation mea suring in regions with normal rain falls 4 cm tipping bucket 4g water for precise precipitation mea suring in regions with heavy rain falls tropical rain Winter fit variety with controlled 2 circu...

Page 2: ...of water The collecting surface of 200 cm WMO standard means that one bucket charge is equivalent to a precipita tion rate of 0 1 mm resp 0 2 mm per square meter If the bucket is tipped the reed contact that is integrated in the sensor will be closed This signal can be sent as pulse or analog The bounce free linearised pulse output is permanently available parallel to an analog current or voltage ...

Page 3: ... fitting the tipping bucket proceed with utmost caution so that the sharp edges of the tipping bucket are not damaged and the middle wall is not bent During operation the tipping bucket lies on the precision buck et bearings To reduce the friction which is produced at one tipping the bearings are made of abrasion resistant delrin The mounted tipping bucket is secured against eventual changes of po...

Page 4: ...ge red heating on Initial operation If the sensor system has been completely mounted and elec trically assembled the sensor will be ready for operation according to the basic settings The operational check has to be performed Maintenance and operational check The precipitation sensor 15188 is nearly mainte nance free The sensor should be checked and cleaned periodically in order to guarantee its p...

Page 5: ...ating Basic settings fig 5 Unless otherwise agreed the precipitation sensor 15188 will be delivered with following basic settings Active pulse output linearised bounce free signal Measuring range 0 10 mm Active analog output 0 20 mA Analog output of the absolute sum of precipitation Current consumption 40 mA Supply voltage 18 30 VDC max load 600 Ω Fig 4 Fig 5 Fig 6 ...

Page 6: ...rs See also tab 1 J3 to select the required mode Pos 1 8 J4 J5 to switch on the respective analog output J6 to switch over the analog voltage output J12 to connect the switch output to the power supply for 2 wire circuit of the low power modi not plugged pow er supply and pulse output are separated J10 must be plugged always at the middle position see fig 14 Fig 8 Positions of the jumpers which ar...

Page 7: ...n Sensors Operating Instructions Fig 9 Fig 10 Fig 11 Example 1 Fig 9 Active analog output 4 20 mA otherwise like basic setting Example 2 Fig 10 Active analog output 0 5 V otherwise like basic setting Example 3 Fig 11 Active analog output 0 10 V otherwise like basic setting ...

Page 8: ...cuit Deactivated analog output Active pulse output linearised bounce free signal Current consumpt max 100 μA typical 50 μm Supply voltage 5 30 VDC Example 5 Fig 13 Low Power Mode PLC Interface Deactivated analog output Active pulse output linearised bounce free signal Current consumpt max 100 μA typical 50 μm Supply voltage 5 30 VDC Fig 12 Fig 13 ...

Page 9: ...d range At exceeding of this final value a new summation starts i e the analog signal starts again on the low level saw tooth diagram 3 Gliding sum of precipitation At this operating mode the accumulated amount of precipita tion which is updated each minute is emitted within the se lected time frame At exceeding the final value of the selected range the analog signal remains on the highest level u...

Page 10: ...00 15188 004 050 but in additional with controlled 2 circuit heating like 15188 H Id No 00 15188 204 050 Safety instructions This system is designed according to the state of the art ac cepted safety regulations However please note the following rules 1 Before setting into operation please read all appropriate manuals 2 Please take notice of internal and state specific guidelines and or rules for ...

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